Photo taken on Aug 9, 2018 shows a comprehensive inspection train running on the Jinan-Qingdao high-speed railway in Zouping section in Binzhou city, East China’s Shandong province. The Jinan-Qingdao high-speed railway started a joint test recently. With a designed speed of 350 kilometers per hour, the 307.9-kilometer railway is expected to be put into operation at the end of 2018. [Photo/Xinhua]

Aerial photo taken on Aug 10, 2018 shows a comprehensive inspection train running on the Jinan-Qingdao high-speed railway in Zouping section in Binzhou city, East China’s Shandong province. The Jinan-Qingdao high-speed railway started a joint test recently. With a designed speed of 350 kilometers per hour, the 307.9-kilometer railway is expected to be put into operation at the end of 2018. [Photo/Xinhua]

Aerial photo taken on Aug 10, 2018 shows a comprehensive inspection train running on the Jinan-Qingdao high-speed railway in Zouping section in Binzhou city, East China’s Shandong province. The Jinan-Qingdao high-speed railway started a joint test recently. With a designed speed of 350 kilometers per hour, the 307.9-kilometer railway is expected to be put into operation at the end of 2018. [Photo/Xinhua]

Aerial photo taken on Aug 9, 2018 shows a comprehensive inspection train running on the Jinan-Qingdao high-speed railway in Zouping section in Binzhou city, East China’s Shandong province. The Jinan-Qingdao high-speed railway started a joint test recently. With a designed speed of 350 kilometers per hour, the 307.9-kilometer railway is expected to be put into operation at the end of 2018. [Photo/Xinhua]